Essays about: "N2 fixation"

Showing result 1 - 5 of 6 essays containing the words N2 fixation.

  1. 1. N2 fixation of three legume species in an agroforestry system

    University essay from SLU/Dept. of Soil and Environment

    Author : Hsiang-Ju Fan; [2023]
    Keywords : nitrogen; dinitrogen fixation; legumes; groundnut; stylo; pinto peanut; understorey crop;

    Abstract : Due to the strong soil erosion caused by agricultural activities and sloping landscape, agroforestry has been introduced as a potentially sustainable cropping practice in the mountainous NW Vietnam. Using legumes as understorey crops in these systems has a potential to limit erosion and smother weeds, as well as provide additional nitrogen (N) to the system. READ MORE

  3. 2. Nitrogen fixation by cyanobacteria associated to feathermosses : a comparison between Scots pine and Norway spruce stands

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Felicia Dahlgren Lidman; [2018]
    Keywords : boreal forest; pinus sylvestris; picea abies; acetylene reduction assay;

    Abstract : The limitations of available nutrients are strong in the boreal forest, especially of nitrogen (N). Due to slow mineralization rate of organic soil nitrogen, caused by low temperatures and acidic soils. Few organisms can fixate atmospheric nitrogen. Among those who have the ability there are some that are common in the boreal forest. READ MORE

  4. 3. Development of PCR primers for community studies of bacterial hydrogenases in environmental samples

    University essay from SLU/Dept. of Plant Biology and Forest Genetics (until 131231)

    Author : Ernest Ndobe Ndobe; [2013]
    Keywords : uptake hydrogenase; bacterial community; biological nitrogen fixation; symbiosis;

    Abstract : Soil microorganisms interact with plants in ways that affect nutrient availability, hormonal regulation and often lead to improved plant growth. In the N2-fixing root nodule symbiosis between legume plants and bacteria generally called rhizobia the plant gains access to atmospheric nitrogen. READ MORE

  5. 4. Nitrogen fixation among boreal feather mosses along a clear-cut chronosequence

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Lisa Wik Persson; [2013]
    Keywords : boreal forest; nitrogen fixation; feather moss; Pleurozium schreberi; Hylocomium splendens; cyanobacteria; acetylene reduction; Sweden; boreal skog; kvävefixering; cyanobakterier; acetylen reduktion; Sverige;

    Abstract : The Swedish boreal forests are limited by nitrogen (N) availability. While biological N2 fixation by cyanobacteria hosted by pleurocarpous feather mosses are important sources of N input to natural boreal forest ecosystems, little is known about the patterns of N2 fixation in silvicultural systems. READ MORE

  6. 5. Effect of varietal and species diversity on nitrogen fixation and nitrogen cycling in an organic faba bean spring wheat intercropping system

    University essay from SLU/Dept. of People and Society

    Author : Nawa Raj Dhamala; [2012]
    Keywords : Advisors; Cropping system; Diversity; N2 fixation; N cycling; 15N natural abundance; Questionnaires;

    Abstract : This study was undertaken to evaluate the effect of varietal and species diversity of faba bean and spring wheat on N2 fixation and N cycling in an organic system. The field experiment was carried out at SLU Alnarp to quantify biological N2 fixation using 15N natural abundance method. READ MORE